Authentication and quantitation of frauds in extra virgin olive oils based on HPLC-UV fingerprinting and multiariate calibration
HPLC-UV fingerprinting, obtained on a Zorbax Eclipse XDB-C8 reversed-phase column under gradient elution employing 0.1% formic acid aqueous solution and methanol as mobile phase, was applied to the analysis and characterization of olive oils. More than 130 edible oils, including monovarietal extra-v...
| Autores: | , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2018 |
| País: | España |
| Institución: | Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya) |
| Repositorio: | Recercat. Dipósit de la Recerca de Catalunya |
| OAI Identifier: | oai:recercat.cat:2445/121163 |
| Acceso en línea: | https://hdl.handle.net/2445/121163 |
| Access Level: | acceso abierto |
| Palabra clave: | Cromatografia de líquids d'alta resolució Oli d'oliva Indústria alimentària Frau High performance liquid chromatography Olive oil Food industry Fraud |
| Sumario: | HPLC-UV fingerprinting, obtained on a Zorbax Eclipse XDB-C8 reversed-phase column under gradient elution employing 0.1% formic acid aqueous solution and methanol as mobile phase, was applied to the analysis and characterization of olive oils. More than 130 edible oils, including monovarietal extra-virgin olive oils (EVOOs) and other vegetable oils, were analyzed. Principal component analysis results showed a noticeable discrimination between olive oils and other vegetable oils from raw HPLC-UV chromatographic profiles as data descriptors. In contrast, selected HPLC-UV chromatographic time-window segments were necessary to achieve discrimination among monovarietal EVOOs. Partial least square (PLS) regression was employed to tackle olive oil authentication of an Arbequina EVOO adulterated with a Picual EVOO, a refined olive oil, and a sunflower oil. Highly satisfactory results were obtained after PLS analysis, with overall errors in the quantitation of adulterations of an Arbequina EVOO (down to 2.5% adulterant) below 2.9%. |
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